Ebook Conversion
Convert LRF to PDB Online — Free
Fast, free LRF to PDB converter. No registration required.
或从以下导入
200万+文件已转换
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安全传输
HTTPS 加密上传
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文件处理后自动删除
无需注册
即刻开始转换
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任何浏览器，任何设备
如何转换
1
Upload your .lrf file by dragging it into the upload area or clicking to browse.
2
Choose your output settings. The default settings work great for most files.
3
Click Convert and download your .pdb file when it's ready.
什么是 LRF？
LRF is Sony's proprietary eBook format developed for Sony Reader devices. Discontinued in favor of EPUB, LRF files require conversion to remain readable on modern devices.
格式详情
- 全称
- Sony BroadBand eBook
- 扩展名
- .lrf
主要特点
- Sony Reader native
- BBeB format
- Fixed layout support
- Discontinued format
什么是 PDB？
PDB is the Palm OS database format used for eBooks on Palm Pilot and compatible PDAs. It was one of the earliest digital reading platforms, supporting eReader and Plucker content. Legacy format with large existing library.
格式详情
- 全称
- Palm Database eBook
- 扩展名
- .pdb
主要特点
- Palm OS
- eReader format
- Legacy eBook
- Plucker support
LRF 与 PDB 对比
| 特性 | LRF | PDB |
|---|---|---|
| 全称 | Sony BroadBand eBook | Palm Database eBook |
| 扩展名 | .lrf | .pdb |
| 最适合 | Sony Reader native | Palm OS |
常见问题
Yes. Our converter preserves chapter structure, table of contents, and navigation. Formatting, images, and internal links are maintained when both formats support them.
MOBI and AZW3 formats work natively on Kindle devices. EPUB works on Kobo, Nook, and most other e-readers. PDF works universally but isn't reflowable.
We can only convert DRM-free eBooks. If your file has DRM restrictions, you'll need to remove them before conversion. We don't provide DRM removal tools.
Yes. eBook conversion is free with up to 5 conversions per day. No registration or watermarks. Pro users get unlimited conversions and batch processing.
Yes. Upload from any device with a browser — iPhone, Android, tablet, or desktop. No app installation required.